27.5MM LEAD SPACING. BR Umut1001.
Matched Pair Philips Miniwatt ECC83 Ring Getter 12AX7A Rare Holy Grail’s NOS
NOS is subject to interpretation and there is no specific definition for it either. There are suggestions and opinions. Tube testers do not test for these problems in the manner in which you think, except to the extent that a tube tester with sensitive leakage detection will find far more “noisy” tubes than a tube tester with only “fair” leakage sensitivity, to the extent that the noise is due to this problem.
AMPEREX 12AX7 ECC83 BUGLE BOY 1963 HEERLEN HOLLAND PERFECT MATCHING SET NIB
📅 1963 Date-Coded • Genuine Heerlen Factory Build. Earlier Bugle Boy production widely associated with the most desirable Heerlen runs. 💎 Original Amperex Bugle Boy boxes. ECC83 12AX7. 🎺 A rare opportunity to own a genuine 1963 Heerlen-made Amperex Bugle Boy matched pair in exceptional original condition.
Philips ECC83 12AX7 Short Plates Matched Pair – Heerlen 1962 – Near NOS
The most distinctive sound feature of the Heerlen ECC83’s is the transparent, natural and expansive midrange presentation, with a slight touch of warmth that illuminates your music. Every piece of music you play through these tubes sounds like from a vinyl record, whether your sound source is phono or not.
AMPEREX 12AX7 ECC83 BUGLE BOY 1963 HERLEEN HOLLAND PERFECT MATCHED SET NIB
💎 Original Amperex Bugle Boy boxes. ECC83 12AX7. 🎺 A rare opportunity to own a genuine 1963 Heerlen-made Amperex Bugle Boy matched pair in exceptional original condition. BUGLE BOYS. ⭐ Smooth, detailed, and effortlessly musical—the classic Bugle Boy presentation that audiophiles have chased for decades.
Amprex Bugle Boy ECC83 / 12AX7 Vacuum Tube ….Nice Lettering
Up for sale is a 1960 Amprex Bugle Boy ECC 83 / 12AX7 preamp tube with a single, large halo and it’s in nice condition. It was tested on a Amplitrex, top-of-the-line tube tester. The tube tested excellent.
(2) Amperex Bugle Boy 12AX7 ECC83 Treble Clef Matched Codes 1959 Tests NOS
(2) Amperex Bugle Boy 12AX7 ECC83 Treble Clef Vacuum Tubes | 1959 Production | Matched Codes I6I Δ9L/J. Tube 1 tests at 54/50 and tube 2 at 48/52 with 32 being the minimum score for a good tube (with 65% life remaining).
TWO Amperex ECC83 12AX7 Tubes / Bugle Boy Treble Clef / Amplitrex 👍/ O Getters
TWO Amperex ECC83 12AX7 tubes. Tested on Amplitrex AT-1000 tube tester (fixed bias mode). O getters / Halo getters. Treble Clef logos excellent. Bugle Boy white logos excellent. Tubes test at 1600, 1700 and 1600, 1600 where pass/fail is 1040 micromhos.
TWO Amperex ECC83 12AX7 Tubes /Amplitrex Tested / D Foil Getters / Bugle Boy ’57
TWO Amperex ECC83 12AX7 tubes. Tested on Amplitrex AT-1000 tube tester (fixed bias mode). D foil getters. Bugle Boy logo visible on one tube and faded on other tube. Tubes test at 1600, 1500 and 1500, 1700 where pass/fail is 1040 micromhos.
NOS Adzam SQ ECC186 Philips Heerlen Holland Tested Rare Audio Tube NIB
Original Adzam SQ box included. Professionally tested with strong results and balanced operation. ECC186 Special Quality. Model: ECC186. Genuine Adzam SQ. Original Adzam SQ box. Triode 1: 10.3 mA / 2150 µmhos (98%).